/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    padding: 10px 0;
    background: rgba(255, 255, 255, 0.98);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 40px;
    width: auto;
}

.logo span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* Navigation */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
    list-style: none;
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link:hover::after {
    width: 100%;
}

/* Auth Buttons */
.auth-buttons {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn-login {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 20px;
    border-radius: 50px;
    transition: var(--transition);
}

.btn-login:hover {
    background: rgba(46, 125, 50, 0.1);
}

.btn-register {
    background: var(--primary-color);
    color: var(--text-white);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 25px;
    border-radius: 50px;
    transition: var(--transition);
}

.btn-register:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(46, 125, 50, 0.3);
}

/* Mobile Menu Button */
.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    margin: 3px 0;
    transition: var(--transition);
    border-radius: 3px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Responsive Header */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        justify-content: flex-start;
        padding: 40px 20px;
        transition: var(--transition);
        overflow-y: auto;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        width: 100%;
        text-align: center;
    }

    .nav-link {
        display: block;
        padding: 15px 0;
        font-size: 1.2rem;
    }

    .auth-buttons {
        flex-direction: column;
        width: 100%;
        margin-top: 20px;
    }

    .btn-login,
    .btn-register {
        width: 100%;
        text-align: center;
    }

    .logo span {
        font-size: 1.2rem;
    }
}